Glycosylated Hemoglobin as a Predictor of Fetal Pulmonic Maturity in Insulin-Dependent Diabetes at Term

Autor: Kerry M. Lewis, Alessandro Ghidini, Catherine Y. Spong, Caroline M. Heimberger
Rok vydání: 1999
Předmět:
Zdroj: American Journal of Perinatology. 16:257-260
ISSN: 1098-8785
0735-1631
Popis: In insulin dependent diabetic (IDDM) gestations, fetal pulmonary maturity is delayed in the presence of suboptimal glycemic control. Serum glycosylated hemoglobin (HbA1c) provides a means of assessing glycemic control. We evaluated maternal HbA1 c in IDDM pregnancies at term undergoing amniocentesis for lung maturity to establish if euglycemia is associated with improved fetal lung maturity. Between July 1995 and June 1996, IDDM patients undergoing amniocentesis at term for lung maturity studies had a maternal serum sample analyzed for HbA1c. Fetal lung maturity was established by the presence of phosphatidylglycerol (PG) in amniotic fluid. HbA1c was considered elevated if >6.2%. Mean HbA1 c level was 6.8% (range 4.4 to 9.9%). PG was present in 54% of patients with elevated HbA1c (7/13) versus 80% of those with normal HbA1 c (8/10) (p = 0.4). Although birth weight was higher in the elevated than in the normal HbA1c group (3770 ± 514 vs. 3215 ± 610 g), no association was present between birth weight and HbA1 c level (r = 0.22, p = 0.4). The rate of a mature pulmonic profile at term is not significantly different between IDDM women with good or poor glycemic control. HbA1 c values should not be used to predict the presence or absence of amniotic fluid PG.
Databáze: OpenAIRE